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| In-Situ Raman Observations for PLZT Ferroelectric Ceramics under Compressive Stresses |
| ZHANG Sa1, 2, 3, LIANG Li-ping1 |
1. College of Materials, Department of Materials Science and Engineering, Xiamen University, Xiamen 361005, China
2. Fujian Provincial Key Laboratory of Advanced Materials, Xiamen University, Xiamen 361005, China
3. Key Laboratory of High Performance Ceramic Fibers, Ministry of Education, Xiamen 361005, China |
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Abstract The change in material microstructure caused by ferroelectric domain switching under an alternative mechanical and electrical field is considered to be a major cause for degradation and failure of ferroelectric materials. It is shown that Raman spectroscopy could be used as a nondestructive, micro-regional and sensitive technique for in-situ observations of domain switching and microstructure changes for polycrystalline ceramics with home-made experimental apparatuses. The lanthanum-doped lead zirconate titanate (PLZT) ceramics with atomic ratio Zr/Ti=53/47 were prepared with conventional solid state reaction technique. The crystal phase and morphology of the PLZT specimen were characterized with XRD and SEM techniques, with the ferroelectric physical properties with Precision_LC system. The compressive stress was applied to the PLZT specimen and in-situ Raman measurements were carried out through the self made microtest mechanical loading device. The effects of stresses and polarization directions of the scattered light on the Raman spectra intensity and peak position for E(2TO) and E(3TO+2LO)+B1 soft modes were discussed and analyzed. The results revealed that both variations of peak intensity with the polarization degree for E(2TO) and E(3TO+2LO)+B1 soft modes showed an periodicity in a sine type law, which increased to the highest value at 60° and decreased to the lowest value at 150°. With the increase of the compressive stress, the peak intensity for E(2TO) and E(3TO+2LO)+B1 soft modes showed a significant decrease at the polarization degree of 0° and 60°, whiel it remained unchanged at 90° and 150°. The compressive stress has no effects on the peak position for E(2TO) and E(3TO+2LO)+B1 soft modes.
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Received: 2016-04-05
Accepted: 2016-08-19
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[1] Zhang Sa, Cheng Xuan, Zhang Ying. Transactions of Nonferrous Metals Society of China, 2011, 21(10): 2259.
[2] YANG Feng-juan, CHENG Xuan, ZHANG Ying(杨凤娟，程 璇，张 颖). Journal of the Chinese Ceramic Society(硅酸盐学报), 2015, 25(10): 2777.
[3] Lu Shengbo, Xu Zhengkui, Zuo Ruzhong. Ceramic International, 2014，40(8): 13565.
[4] LIU Ying, CHENG Xuan, ZHANG Sa, et al(刘 莹, 程 璇, 张 飒, 等). Journal of Functional Materials(功能材料), 2014, 1(45): 01078.
[5] Zhang B Y, Jiang F M, Yang Y. Journal of Applied Physics，1996, 80(3): 1916.
[6] Kim K L, Huber J E, Kim K L. ASME Conference on Smart Materials, 2012，(2): 155.
[7] ZHANG Sa, LIU Ying, LIU Yi-xuan, et al(张 飒, 刘 莹, 刘怡萱, 等). Journal of Inorganic Materials(无机材料学报), 2014, 29(4)：399.
[8] ZHANG Sa, CHENG Xuan, ZHANG Ying, et al(张 飒, 程 璇, 张 颖, 等). Chinese Journal of Light Scattering(光散射学报), 2012, 24(1)：53.
[9] ZHUANG Qing-yang, CHENG Xuan, ZHANG Sa, et al(庄清洋, 程 璇, 张 飒, 等). Journal of Functional Materials(功能材料), 2014, 4(45): 04100.
[10] Sakashita T, Chazono H, Pezzotti G. J. Appl. Phys.，2007, 102(12): 124106.
[11] Garnica-Romo M G, Páez-Sánchez A, García-González L, et al. Journal of Sol-Gel Science and Technology, 2015, 74(2): 425.
[12] Mayén-Mondragón R, Yánez-Limón J M, Moya-Canul K M, et al. Journal of Materials Science: Materials in Electronics, 2013, 24(6): 1981.
[13] Prisedski V V, Pogibk V M, Polishchuk V S. Powder Metallurgy and Metal Ceramics, 2014, 52(9-10): 505. |
| [1] |
LI Dong-ming1, 2, BI Hai-ping1, LIU Zhi-chao2, YANG Jin-hua2*, ZHANG Li-juan2, 3, WANG Liang4, CHEN Gui-fen1. Research on Target Recognition System for Camouflage Target Based on Dual Modulation[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(04): 1174-1178. |
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